Improved molding apparatus



,NITED STATES STEPHEX ASHFORD, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVED IVIOLDING APPARATUS.

`pecificaton forming part of.' Letters Patent No. 414, E119, (latedSeptember 13, 1864.

To @ZZ whom it may concer-71,:

Be it known that l, STEPHEN ASHFORD, of the city and county ofPhiladelphia, and State of Pennsylvania, have invented a new and usefulImprovement in Molding Apparatus; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation ofthe same, reference being had to the annexed drawings,making a part of this specicat-ion, in which* Figure l is a top view ofthe half A of the terns G C and D D, which are permanently secured tothe card B, on which the relief'- plate rests. Fig. 2 is a verticalsection of the same at the red line a b of Fig. 1, in which is seen, inaddition to the parts shown in Fig. 1, pedestals a and b, the card B,and its base B.

. Fig. 8 is a perspective view of the two halves of the relief -plate E,connected with their faces together, and the openings, which will loehereinafter described, formed in them. Fig.

4 is a top view of the said plate, with the middle edges of the twohalves permanently secured together at the red line c d. Fig. 5 is anedge View of the same. Fig. 6 is a top view of the card B, 'with thepatterns C C and D D attached thereto. Fig. 7 is a perspective viewofthe two halves A and A of the flask, andthe closing-board FF inconnect-ion.

Like letters in all the figures represent the l same parts.

The nature of my invention mainly consists in combining and arranging arelief-plate with Y a molding-flask and card of patterns in such amanner as to produce a perfect mold of all the patterns on thecard-plate with only halfpatterns on one side thereof, by which means Inot only require but one-half the numberof pieces that are usuallyrequired, but I expedite the operation of molding in a remarkabledegree.

To enable others skilled in the art to make end use my invention, I willproceed to describe its construction and operation.

A and A are two halves of the moldingflask.

B lisa card-plate, to which the half-patterns are secured.

C C and D D are half-patterns of a faucet and its key, as represented inFigs. l, 2, and 6.

B is a base, to which the card -plate B is firmly screwed, to keep thelatter perfectly true. The patterns C C and D D are secured to permanentpedestals a a and b b on the plate B. The said pedestals are of the samesize and shape as the patterns, and consequently are only seen as totheir elevation, as in Fig. 2.

E is a relief-plate, which is represented in Figs. 3, 4, and 5, detachedfrom the flask,

ld l and in connection therewith in Figs. l and 2. mo ing-flask, tierelief-plate E, and the pat- In the said relief -plate there areopenings c c and (Z d of the same size and shape as the patterns C C andD D, and the pedestals a a and I) b, to which the saidv patterns aresecured, so that when the said plate is laid onv the card -plate B thepedestals will fill the openings accurately, and insure a perfectparting of the sand. rlhe relief-plate is made of any suit-ablethickness, and the height of the pedestals corresponds thereto. Iusually make the said plate of' metal, and likewise the card-plate B,yet they may be made of wood, if desired. I confine a gate, c, on thereliefplate. f

F F .are closing boards. Each half of the flask has dowel pins fj` atone side, and corresponding holes at the opposite side, so that when thetwo halves are brought together the dowels of one will fit in theholesof the other; and the relief-plate E has dowels g g at one edge, andcorresponding holes, 'It It, at its opposite edge, so that each half of'the flask when placed on said plate will be held securely in the sameway as with its fellow.

The operation is as follows: The relief-plate E is placed in position,as represented in Figs. l and 2, with the opening c c and d d embracingthe pedestals a a and b b, and on a line beneath the patterns C C and DD. The halfflask A is then placed on the'plate, as repre sented in Fig.l, with the pins f j' of the flask in the holes h h of the plate, bywhich means the flask is held very steadily in position. The flask isthen filled with sand and rammed in the usual manner. It is then removedoff of the patterns by taking hold of the handles t' i of therelief-plate, and turned over on the board F, as represented in Fig. 7.The relief-plate is then again placed in position on the card-plate, andthe half-fiask A placed upon it and filled in the same manner as the rsthalf. Theilask is then removed from the patterns in the same manner astheilask A, and taken off of the relief-plate and placed on the firsthalf to complete the mold, as represented in said Fig. 7.

I have represented but two patterns in the drawings, each in separatehalves; but it will readily be seen that any desirable number may beplaced on the card-plate by having each half in corresponding positionon the said plate to the position of its fellow.

My plan for constructing the relief-plate E and arranging the patternson the card-plate B so as to have them in corresponding positions, tothe end that the molds in the two half-asks will correspond with eachother to insure an accurate mold, is as follows: I secure temporarilytwo plates with their faces t0- gether, and form an opening through themof the size and shape of each pattern intended to be placed on thecard-plate B,and make the center edge true, so as to form a joint whenthe edges of the plates arev secured to each other,.as represented inFig. 3. I make the plates of equal length also, and then takethem apartand secure the center edges together in a permanent manner. The openingsin the two plates then correspond to each other as to size, shape, andposition. I then place the relief-plate on the cardplate B, and placepedcstals for the patterns on the latter plate, and fasten thempermanently thereto. I then secure the patterns on their pedestals, andas the openings in one half of the relief-plate correspond to those inthe other half, the position of the patterns on on'e half of the card-vplate must correspond also to the position oi' the other half, andconsequently the molds in each half of the flask must likewisecorrespond; hence a complete and accurate moldis made, according to theoperation, as above explained.

It will readily appear that by the use of the relief-plate E, I lift themolds from the patterns without any possibility of their breaking, andforni a more perfect parting than in the old mode of molding, and thatconsequently the molding is performed in muclrshorter time, and:likewise, that the patterns are secured to the card-plate moreaccurately and quicker than in the usual mode. Besides, but one-half thenumber of patterns is required.

Having thus fully described the construction and operation of myimprovement in molding apparatus, what I claim therein as new, anddesire to secure by Letters Patent, is-

1. Constructing the plate E in halves, and then connecting the halvestogether, as above described, so as to make the holes in one halfthereof, which iit on the pedestals a b, correspondwith the holes in theother lialfin shape, size, and position.

2. Constructing the relief-plate E with dowels in one edge andcorresponding holes in the 'other, which correspond in every respect tothe arrangement of the dowels and holes in each half of the flask,substantially as represented, so that the latter are thereby separatelyconnected with the relief-plate for the operation of molding, and conjointly with each oth er to unite the mold by the same means, as abovedescribed.

In testimony that the aboveis my invention I hereunto set my hand andafx my seal this i 10th day of June, 1,864.

STEPHEN ASHFORD. [L

Witnesses;

CHAs. E. PANcoAs'r, STEPHEN UsricK.

